12775423 has 4 divisors (see below), whose sum is σ = 12811968. Its totient is φ = 12738880.

The previous prime is 12775421. The next prime is 12775463. The reversal of 12775423 is 32457721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32457721 = 71 ⋅457151.

It is a cyclic number.

It is not a de Polignac number, because 12775423 - 2¹ = 12775421 is a prime.

It is a super-2 number, since 2×12775423² = 326422865657858, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12775421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17743 + ... + 18448.

It is an arithmetic number, because the mean of its divisors is an integer number (3202992).

Almost surely, 2^12775423 is an apocalyptic number.

12775423 is a deficient number, since it is larger than the sum of its proper divisors (36545).

12775423 is an equidigital number, since it uses as much as digits as its factorization.

12775423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36544.

The product of its digits is 11760, while the sum is 31.

The square root of 12775423 is about 3574.2723735049. The cubic root of 12775423 is about 233.7716073328.

The spelling of 12775423 in words is "twelve million, seven hundred seventy-five thousand, four hundred twenty-three".